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PCI Express Board User’s Manual Pin Assignments
5-7
Female DB25 (OPT8A+/S+)
13 1
25 14
Pin RS-232
2
RxD
3
TxD
4
CTS
5
RTS
6
DTR
7
GND
8
DCD
20
DSR
Female DB25 (OPT8F+/Z+)
Pin RS-422
2
RxD+(B)
3
TxD+(B)
7
GND
14
RxD-(A)
16
TxD-(A)
Female DB25 (OPT8K+/I+)
Pin
RS-422 /
4-wire RS-485
2-wire RS-485
2
RxD+(B) Data+(B)
3
TxD+(B) ---
7
GND GND
14
RxD-(A) Data-(A)
16
TxD-(A) ---